Fitting for steam-traps.



No. 669,063; Patented Feb. 26, l90l. R. G. BROOKE.

FITTING FOR STEAM TRAPS.

(Application filed Mar. 12,-1900. Renewed Jan, 31, 1901.)

(No Model.)

li i w r ii/fil ATT rrrcn.

ROBERT GRUNDY BROOKE, OF MAOCLESFIELD, ENGLAND.

FlTTlNG FOR STEAM-=TRAPS.

SPECIFICATION forming part of Letters Patent No. 669,063, dated February26, 1901.

Application filed March 12, 1900. Renewed January 31, 1901. Serial No.AM. (No model.)

To all whom it may; concern/.-

Be it known that I, ROBERT GRUNDY BROOKE, a subject of the Queen ofGreat Britain and Ireland, and a resident of Upton Grange, Macclesfield,in the county of Chester,England, have invented acertain new and usefulImprovement in Fittings for Steam- Traps, (for which I have madeapplication for Letters Patent in Great Britain, No. 1,563, bearing dateJanuary 24, 1900,) of which the following is a specification.

This invention has reference to improvements in connection with thefittings for use upon expansion steam-traps, the object being to providea simple method of adjusting the release of the load upon the valve,and, further, toinsu re that the movement of the valvet-hrusting membershall always return to its correct position after having beenmanipulated for blowing through or other purposes.

In the accompanying sheet of explanatory drawings, Figure 1 is asectional elevation, and Fig. 2 a plan, showing my improved fittingsapplied in one convenient manner to a steam-trap having a single valvefor effecting the discharge of the water from the trap. Figs. 1, 1 and 1illustrate modifications of my fittings.

In carrying my invention into effect when applying it to one type ofsteam-trap, as illustrated, in which one end of a thrust-rod A operatesby the contraction of the water-tube member to overcome a spring-loadedvalvelever B, I arrange the thrust-rod A or its end cap or bearing E asthe adjustable member to operate upon the spring-loaded valve-lever Binstead of causing the spindle or pilot valve-plug D, when such isemployed, to be held down by an adjustable screw carried upon the end ofthe spring-loaded lever. I cause the end of the thrust-rod A in onemethod of adjustment which I introduce in accordance with my presentinvention to bear against or seat within a cap or recessed plug E,having a stem which screws adjustably into the end liange or collar Forlever B,forming the abutment to receive the thrust or movementoccasioned by the variation of length under expansion and contraction ofthe tube G, connected to the valve-body. This end cap or receiving-plugE, I screw in or out of the collar or flange F to suit the thrust whichis to be given to the spring-loaded lever B. To facilitate theadjustment, I may provide a graduated scale or marking upon the cap heador collar to indicate the position necessary for any desired pressure ortemperature.

Upon the leverB,which carries and receives the pressure of the spring Hfor keeping the valve C upon its seat, I arrange a screwed stud K toproject and bear upon the valvethrusting spindle or plug D, and I formthis stud with a shouldered head, preferably jawshaped, to which Iattach a jointed or pivoted handle or operating-lever L.

When it is desired to release the pressure on the valve spindle or stemD, the jointed handle L is turned so as to unscrew the stud K within thelever B, and thus to raise it from contact with the spindle or plug headD, thereby allowing the steam or water to flow from the tube G throughthe valve 0 to exhaust or waste. The jointed handle L enables it to bethrown over to the opposite side, where it would otherwise be stoppedthrough coming into contact with the spring, and thus enables the stud Kto be readily turned or removed altogether when so required. The fixedabutment-shoulder L, formed upon the head of the stud K for bearing andthrusting upon the lever, insures that the same final position shall bemaintained by the abutment returning to its proper originally-determinedposition whenever the lever is released and then again screwed back tothrust upon the valveplug.

Instead of employing a thrust-cap E with an adjustable end screw whichengages with the flange or collar F of the tube, as shown in Figs. 1 and1, I may modify myimprovements, hereinbefore described, and provide theadjustment in a similar manner upon the end of the spring-loaded leverwhich secures the thrust-rod, as shown in Fig. l ,or, shown in Fig. 1, Imay joint the-rod or operating member A by means of a coupling-screw M,nut, or like device having threads of different pitch, or right and lefthand for varying its length in accordance with the degree of expansionwhich is to be provided for or to suit any particular requirement. Inexpansion steam-traps in which a supplementary or pilot valve isemployed to release the pressure upon a main or larger valve I employ myadjustable thrust-rod and myjointed operatinglever and stud forthrusting upon the pilot valve stem or plug similarly to the mannerhereinbefore described when applying my improvements to a single-valvetrap.

It will be observed that the thrust-rod is supported entirely betweenthe abutment F and the heel end of the valve-lever B and that theadjusting devices for said rod are wholly in theline of the rod andofit-s support,whether in the abutment or in the lever or as a couplingin the rod.

Having now described my invention, what I claim as new, and desire tosecure by Letters Patent, is

In a steam-trap in which the expansion and ROBERT GRUNDY BROOKE;

Witnesses:

JOHN GRAY, EDGAR RIGHToN.

